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Credit Arrangements (Schedule Of Outstanding Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2012	Aug. 31, 2012	Nov. 30, 2011
Credit Arrangements [Abstract]
BSI Term Note	$ 3,214	$ 4,285	$ 7,500
Less current portion	(3,214)	(4,285)	(4,286)
Total long-term debt			$ 3,214

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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